Liner packer



June 6, 1933. L c. TILBURY 1,912,804

. LINER PACKER Filed July 6, 1931 collapsed ample of which is given in t 85 Referring now more per end of said tube there is a substanti Patented June 6, 1933 LYLE O. TILBUBY, OF HOUSTON, TEXAS LINER PACKED Application fled July 8, 1981. Serial No. 548,854.

- This invention relates to a liner packer. An object of the invention is to provide a packer of the character described whereby a fluid tight joint, or seal may be formed 5 between a liner or pipe in a well bore and the surrounding casing, or wall, of the bore. Another object is to provide a packing device of the character described where n the packing element ma bemaintained 1n condition whi er the device is being elevated or lowered, and whereby said packing element may be readily expanded against said casing, or wall, when the acker is landed on the u per end of the mer. Another object of t e invention is to provide a device of the character described wherein provision is made for draining thefluid in the well, above the packing element, back into the well beneath upon the 20 withdrawal of the device from the well.

With the above and other objects in view this invention has particular relation to certain novel features of construction, operation, and arrangement of arts, an ex- 's specification and illustrated in the accompanying drawing, wherein:

Figure 1 shows a side view of the dev1ee, partl in section, as landed on a lmer 1n a we 1, with thepacking element ready to r be expanded,

and

Fi 2 shows a side view of a slightly modihtii form showing the packing element expanded.

garticularly to the drawing the numeral 1 esignates a downwardly tapering, tubular, support and the numeral 2 designates a tube fitted through and slidable in said support. On the u Y conical head 3 having the flat under face 4 and spaced beneath said head there are the drain/ports 5. A setting string 6 is attached to the-head 3 b means of which thepacker may be lowere and 'set or raised.

.On the support '1 there is an annular,

,metal cage having'a depending nipple 7 which may be screwed into the upper end of said support. This cage is formed with the upper and lower annular plates 8, 9

connected by the annular web 10, and the upper plate 8 and web 10 have the respective perforations as 11 and 12. A pacln'ng element, as 13 is moulded onto this cage and-fills the space between said plates and extends above the upper plate 8 and has a smooth, fiat, upper surface. 1

There is a coupling 14 attached to the tube, and as shown in Figure 1, the upper end of this coupling is reduced and connected into the lower end of the sup ort '1 by means of right hand threads 15 wl fereby the head 3 is held elevated above the packing element 13. As shown in Figure 2 the reduced up er end of the coupling 14 has an outward y extended pin 16 which is engageable in an inverted J-slot 17 in the lower end of the support 1 to hold the head 3 elevated as above explained.

In use the packer may be assembled as shown in either figure and let' down into the well until the packer support lands on the upper end of the liner, or pipe 18. The strmg 6 may then be turnedto the right to unscrew th threads 15, if the form shown in Figure 1 is used, or to unseat the pinv 16 from the laterall turned end of the J-slot 17 if the form s own in Figure 2' is used,

and the coupling 14 thus disengaged from s the support 1, and the friction of the support with the upper end of'theliner 18 W111 prevent said supfiprt from turning during this operation. e settin string may-then be lowered until the hear? 3 lands on the packer element 13 and the weight of the string will expand said element out against the inside wall of the casing 19 and a fluid tight joint will thus be formed. The re- S1 lent material 13 of the packer element will be moulded through the openings 11, 12

so. that the'pressure applied torthe top of said element will ".be transmitted through said openin s and said element will be expanded uni ormly throughout.

In case it be desired to withdraw the packer the string may be elevated and the pressure on the element 13 relieved and said element will contract andrelease the walls of the casing 19 and when the openin s- 5 clear the upper end ofthe-body 1 the uid in the casing above may drain through said openings 5 and through the tube 2 back into the well beneath as the packer is pulled out of the well. a

What I claim is:

A packer including a downwardly tapering support shaped to seat within the upper end of a liner in a well bore, an expansible packing element on said support, a coupling releasably engaged to the lower end of said support, a tube extending downwardly through said packing element and support whose lower end is attached to said coupling, a head carried by the upper end of said tube, said tube having a liquid, outlet beneath said head, said head and outlet being located above said expansible element when the coupling is attached to the support, said tube and head being movable downwardly upon the release of said coupling from said support to allow the head to land on and expand said packing element and whereby said outlet is closed.

In testimony whereof I have signed my name to this specification.

LYLE C. TILBURY. 

